Apply the product and/or sum rules (as necessary) to calculate answers to this problem, and also the two that follow. (Express each answer as a fraction between zero and 1.) Problem 1 The probability that the oldest of 3 children is a boy, followed by two girls is , and the probability that a family with 3 children has one boy and twa . {For this problem, assume that boys and girls girls (in any order) is occur with equal probability of 0.5 each]